x = int(input())
if 400 <= x <= 599: print("8")
elif 600 <= x <= 799: print("7")
elif 800 <= x <= 999: print("6")
elif 1000 <= x <= 1199: print("5")
elif 1200 <= x <= 1399: print("4")
elif 1400 <= x <= 1599: print("3")
elif 1600 <= x <= 1799: print("2")
elif 1800 <= x <= 1999: print("1") x = int(input()) x int(input()) int input() input if 400 <= x <= 599: print("8")
elif 600 <= x <= 799: print("7")
elif 800 <= x <= 999: print("6")
elif 1000 <= x <= 1199: print("5")
elif 1200 <= x <= 1399: print("4")
elif 1400 <= x <= 1599: print("3")
elif 1600 <= x <= 1799: print("2")
elif 1800 <= x <= 1999: print("1") 400 <= x <= 599 400 <= x 400 x 599 elif 600 <= x <= 799: print("7") 600 <= x <= 799 600 <= x 600 x 799 elif 800 <= x <= 999: print("6") 800 <= x <= 999 800 <= x 800 x 999 elif 1000 <= x <= 1199: print("5") 1000 <= x <= 1199 1000 <= x 1000 x 1199 elif 1200 <= x <= 1399: print("4") 1200 <= x <= 1399 1200 <= x 1200 x 1399 elif 1400 <= x <= 1599: print("3") 1400 <= x <= 1599 1400 <= x 1400 x 1599 elif 1600 <= x <= 1799: print("2") 1600 <= x <= 1799 1600 <= x 1600 x 1799 elif 1800 <= x <= 1999: print("1") 1800 <= x <= 1999 1800 <= x 1800 x 1999 x = int(input()) int(input()) x
x = int(input())
if 400 <= x <= 599: print("8")
elif 600 <= x <= 799: print("7")
elif 800 <= x <= 999: print("6")
elif 1000 <= x <= 1199: print("5")
elif 1200 <= x <= 1399: print("4")
elif 1400 <= x <= 1599: print("3")
elif 1600 <= x <= 1799: print("2")
elif 1800 <= x <= 1999: print("1")
